高效率高功率全固态紫外激光器

报道了采用大功率国产光纤束模块端面抽运Nd:YVO4激光晶体的腔外三倍频紫外激光器, 用声光调Q技术实现了高功率高光束质量基频光输出。采用LBO Ⅰ类相位匹配和LBO Ⅱ类相位匹配的腔外倍频方法, 并利用凹面反射镜的方式进行聚焦, 避免了1064 nm和532 nm激光聚焦时由于波长的不同而产生的色差效应, 有效地提高了三倍频的倍频效率。最终在注入抽运光功率为23.3 W, 声光调Q激光器的调制频率为20 kHz的工作条件下, 基频光输出功率为7.28 W时, 得到紫外激光输出功率为1.86 W, 1064 nm基频光到355 nm紫外激光的光-光转换效率为25.5%, 此外, 对紫外激光光束质量的测试表明, 该紫外激光器具有高功率输出的同时仍有很好的光束质量。

Abstract

A high power end-pumped Nd:YVO4 all-solid-state ultraviolet (UV) laser was demonstrated under acousto-optic Q-switched operation, using type Ⅰ phase-matched LiB3O5 (LBO) as second harmonic generation (SHG) crystal and type Ⅱ phase-matched LBO as third harmonic generation (THG) crystal. To improve the optical to optical (O-O) efficiency of fundamental wave to THG UV laser, a concave reflection mirror is used to focus the laser into THG LBO crystal, which avoids the chromatic aberration of traditional focusing lens effectively. Finally, the output power of 355 nm UV laser reaches to 1.86 W at the incident pump power of 23.3 W, and the output power of fundamental wave is about 7.28 W at 20 kHz repetition rate, and O-O conversion efficiency is about 25.5% accordingly. The test results of UV laser beam quality indicate that the laser can still work at a good beam quality even at the maximum output, which means that the UV laser can have a very good beam quality even at the high power output.

参考文献

[1] Alce V. Hicks, Charles X. Wang, Gary Y. Wang. Advances in high power diode-pumped ultraviolet lasers [C]. SPIE, 2004, 5332:120～133

[2] . Kitano, T. Matsui, K. Sato et al.. Efficient 355-nm generation in CsB3O5 crystal[J]. Opt. Lett., 2003, 28(4): 263-265.

[3] Gao Lanlan, Tan Huiming. LD end-pumped all-solid-state ultraviolet laser [J]. Optoelectronic Technology, 2003, 23(2):109～112
高兰兰, 檀慧明. LD端面抽运全固态紫外激光器[J]. 光电子技术, 2003, 23(2):109～112

[4] Fan Xiuwei, Wang Yun, Peng Qianqian et al.. Laser-diode pumped Nd:GdVO4 ultraviolet laser [J]. Laser and Infrared, 2005, 35(5):331～334
范秀伟, 王云, 彭倩倩等. 二极管泵浦Nd:GdVO4晶体紫外激光器的研究[J]. 激光与红外, 2005, 35(5):331～334

[5] Wang Yun, Fan Xiuwei, Peng Qianqian et al.. LD pumped Nd:GdVO4 crystal ultraviolet laser with LBO frequency tripling [J]. J. Optoelectronics·Laser, 2005, 16(5):551～553
王云, 范秀伟, 彭倩倩等. LD泵浦Nd:GdVO4晶体LBO三倍频紫外激光器研究[J]. 光电子·激光, 2005, 16(5):551～553

[6] Tan Chengqiao, Zheng Quan, Xue Qinghua et al.. LD end pumped Nd:YAG outcavity fourth harmonic generation high power ultraviolet laser [J]. Laser and Infrared, 2005, 35(7):490～492
谭成桥, 郑权, 薛庆华等. LD端泵Nd:YAG/Cr:YAG 腔外变频产生高功率紫外[J]. 激光与红外, 2005, 35(7):490～492

[7] Tan Chengqiao, Xue Qinghua, Jia Fuqiang et al.. LD-pumped Nd:YAG outcavity fourth harmonic generation high power ultraviolet laser [J]. Acta Photonica Sinica, 2005, 34(9):1289～1292
谭成桥, 薛庆华, 贾富强等. LD泵浦Nd:YAG/Cr:YAG 腔外频率变换高功率紫外激光器[J]. 光子学报, 2005, 34(9):1289～1292

[8] . . High-average-power third harmonic generation at 355 nm with CsB3O5 crystal[J]. Chin. Phys. Lett., 2005, 22(6): 1426-1428.

[9] Zhang Shaojun, Dong Shengming, Li Fuqi et al.. Efficient third-harmonic-generation of 1064 nm laser with BiB3O6 crystal [J]. Chinese J. Lasers, 2003, 30(12):1087～1089
张少军, 董圣明, 李福奇等. 新型BiB3O6晶体高效和频产生355 nm紫外激光[J]. 中国激光, 2003, 30(12):1087～1089

[10] Zhang Hongrui, Gao Mingyi, Zheng Yi et al.. High power diode-end-pumped Nd:YVO4 laser [J]. Chinese J. Lasers, 2004, 31(1):19～21
张红瑞, 高明义, 郑义等. 大功率激光二极管端面抽运的Nd:YVO4激光器[J]. 中国激光, 2004, 31(1):19～21

[11] Liu Junhai, Lu Junhua, Lü Jianren et al.. Mode matching in high power laser diode array end pumped Nd:YVO4 solid-state laser [J]. Acta Optica Sinica, 2000, 20(2):186～189
刘均海, 吕军华, 卢建仁等. 高功率端面抽运Nd:YVO4固体激光器模匹配的研究[J]. 光学学报, 2000, 20(2):186～189

[12] Du Chenlin, Liu Junhai, Wang Zhengping et al.. LD-pumped acouso-optic Q-switched Nd:YVO4 laser with high repetition rates and short pulse width [J]. Chinese J. Lasers, 2002, A29(6):489～491
杜晨林, 刘均海, 王正平等. LD抽运声光调Q高重复频率短脉宽Nd:YVO4激光器[J]. 中国激光, 2002, A29(6):489～491

石朝辉, 樊仲维, 张瑛, 张晶, 牛岗, 王培峰, 崔建丰, 裴博. 高效率高功率全固态紫外激光器[J]. 中国激光, 2007, 34(1): 29. 石朝辉, 樊仲维, 张瑛, 张晶, 牛岗, 王培峰, 崔建丰, 裴博. High Efficiency and High Power All-Solid-State Ultraviolet Laser[J]. Chinese Journal of Lasers, 2007, 34(1): 29.

高效率高功率全固态紫外激光器

关于本站 Cookie 的使用提示

全站搜索

高效率高功率全固态紫外激光器

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索